Notes: Upton could get callupTop prospect might be with big club if Quentin goes on DLBy Steve Gilbert / MLB.com

SAN DIEGO -- Outfielder Carlos Quentin injured his right hamstring legging out a double in the fifth inning Wednesday and could be headed for a stint on the disabled list.

"We'll monitor it and see how he is [Thursday]," D-backs manager Bob Melvin said. "Usually the next day you have a better read on it."

If Quentin does have to go on the DL, a likely candidate to replace him would be Double-A Mobile outfielder Justin Upton, the team's top prospect and the No. 1 overall pick in the 2005 First-Year Player Draft.

Upton, who turns 20 later this month, started the year with Class A Visalia, but was promoted to Mobile after hitting .341 in 32 games. With the BayBears, he is hitting .310 with 13 homers and 53 RBIs.

when yahoo puts him in the database he'll hit waivers, just like Braun and Hughes did earlier... whoever has the highest waiver that wants him will get him.... he'll be on waivers for 2-3 days after they put him in the database... so if you have the #3 waiver, you can stay up all night and put the bid in the second they add him.... and someone with the #1 waiver can put the bid 12 hours after you and he'll get him